Table 3.
Hemodynamic and Arterial Blood Gas Data at Rest, During 20W, and at Peak Exercise
| Variable | Control Participants | Patients With HFpEF |
|---|---|---|
| Rest | ||
| HR, beats/min | 75 ± 11 | 74 ± 16 |
| Qc, L/min | — | 5.2 ± 1.3 |
| Pao2, mm Hg | 99.2 ± 8.6 | 83.6 ± 5.7a |
| Paco2, mm Hg | 36.2 ± 4.2 | 40.5 ± 4.0a |
| HbO2, % | 96 ± 1 | 94 ± 2a |
| 20W | ||
| HR, beats/min | 109 ± 18 | 93 ± 16 |
| Qc, L/min | — | 8.9 ± 2.0 |
| Pao2, mm Hg | 99.4 ± 9.1 | 85.1 ± 12.9b |
| Paco2, mm Hg | 36.5 ± 4.1 | 40.6 ± 4.2b |
| HbO2, % | 97 ± 1 | 95 ± 3b |
| Peak exercise | ||
| HR, beats/min | 157 ± 9 | 122 ± 19a |
| HR, % predicted maximum | 99 ± 6 | 79 ± 12a |
| Qc, L/min | — | 10.5 ± 2.7 |
| Pao2, mm Hg | 108.5 ± 8.1 | 88.3 ± 15.1a |
| Paco2, mm Hg | 31.6 ± 2.5 | 38.9 ± 4.7a |
| HbO2, % | 97 ± 1 | 94 ± 3b |
Data are presented as mean ± SD. 20W = 20 watts; HbO2 = hemoglobin oxygen saturation; HFpEF = heart failure with preserved ejection fraction; HR = heart rate; Qc = cardiac output; — = no data available.
a
P < .01.
b
P < .05.